New service differentiation model for end-to-end qos provisioning in wireless ad hoc networks

Authors:
Joo-Sang Youn;Seung-Joon Seok;Chul-Hee Kang
Affiliations:
Department of Electronics and Computer Engineering, Korea University, Seoul, Korea;Dept. of Computer Engineering, Kyungnam University, Kyungnam, Korea;Department of Electronics and Computer Engineering, Korea University, Seoul, Korea
Venue:
ADHOC-NOW'06 Proceedings of the 5th international conference on Ad-Hoc, Mobile, and Wireless Networks
Year:
2006

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Abstract

In this paper, a new QoS model is presented for end-to-end service provisioning in wireless ad hoc networks. Many previous works focus on the packet scheduling mechanism using multiple service classes implemented for traffic prioritization based service differentiation. However, this paper concentrates on a scheme for dynamically selecting a proper one among several forwarding classes that perform different service rate according to service requirements. There service requirements include low delay, high throughput, and low loss. The proposed solution is a new QoS provisioning model called Dynamic Hop Service Differentiation (DHSD). This model supports soft QoS provisioning to reduce network overhead and wireless PHB (WPHB) to achieve the end-to-end QoS required by applications. The proposed QoS model is evaluated using OPNET simulation. We show that this model outperforms both best-effort and strict priority service models in wireless ad hoc network environments.